Erik Anderson 1, James Ahrens 2, Gilbert Preston 3, Antonio Baptista 4, Claudio Silva 1 VisTrails:...

Erik Anderson1, James Ahrens2, Gilbert Preston3, Antonio Baptista4, Claudio Silva1

VisTrails: Applications in Scientific Visualization

1SCI Institute2Los Alamos National Lab.3University of Utah Dept. of Psychiatry4OGI School of Science and Engineering

Overview

Cosmology Joint work with James Ahrens at LANL

Schizophrenia Joint work with Gilbert Preston at U of U

River Inlet Studies Joint work with Antonio Baptista at OGI

VisTrails in Cosmology

Cosmology The quantitative

study of The Universe in its totality

Visualization in Cosmology

Simulations are particle-based

There are huge amounts of derived data

Different simulations give different results


Demo


What can be done better?

What was done well?


What can be done better? More intuitive control over data exploration

processes More integrated interaction capabilities

What was done well? Scientists are exposed to their data in a new way New questions were asked about the structure of

their data

VisTrails in Schizophrenia

Collaboration with Dr. Gilbert Preston MD

Studying the effects of magnetic stimulation of the brain

Hugely multi-modal study


Multi-modal study EEG MEG MRI Genetics

Huge amount of data Approx. 300 GB of

raw data per person 1400 people


A simple visualization tool is not enough

Signal processing is important to the study


Derived products are often more insightful than raw data


Always look for new and better ways to visualize data.


Signal Processing Demo


MRI Processing Doctors are used to

seeing things a certain way

Visualization aims to be able to look at more data at one time


MRIs are stored as regular volumetric grids. What can we do to add to the visualization? VisTrails Demo

Visualization in Schizophrenia

What can be done better?

What was done well?

Visualization in Schizophrenia

What can be done better? More intuitive control over data exploration

processes More integrated interaction capabilities

What was done well? Multi-modal integration can be controlled from a

single workflow New methods of visualization were used to better

describe data products

VisTrails in Oregon

Collaboration with Antonio Baptista from OGI

Visualization of time-based, peta-scale data

VisTrails in Oregon

VisTrails demo

VisTrails in Oregon

Interaction with scientists is more important than the visualization alone

Scientists need to be able to see an advantage in order to use a new visualization method

VisTrails in Oregon

Many people using the system concurrently

DB backend must deal with simultaneous transaction

Erik Anderson 1, James Ahrens 2, Gilbert Preston 3, Antonio Baptista 4, Claudio Silva 1 VisTrails:...

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